MESON Chess Problem Database

Problem Display
PID: 92074 (1K1B4/1B6/b2NR2p/4Pp1n/r2N1k1r/n1P2P2/q1pPR3/6Q1 w - - 0 1)

Wielgos, Oskar

Deutsche Schachblatter, 1963

1K1B4/1B6/b2NR2p/4Pp1n/r2N1k1r/n1P2P2/q1pPR3/6Q1

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Sxe6#
    • 1...Bxe2
      • 2.Sxe2#
    • 1...Sg3
      • 2.Qe3#
  • Tries
    • 1.S4xf5?
      • threat
        • 2.Qe3#
      • 1...Sc4
        • 2.Qd4#
      • 1...Re4!
    • 1.S6xf5?
      • threat
        • 2.Re4#
        • 2.Qe3#
      • 1...Bxe2
        • 2.Qe3#
      • 1...Bxb7
        • 2.Qe3#
      • 1...Qd5
        • 2.Qe3#
      • 1...Bd3
        • 2.Qe3#
      • 1...Sc4
        • 2.Re4#
      • 1...Sg3
        • 2.Qe3#
        • 2.Qxg3#
      • 1...Sf6
        • 2.Qe3#
        • 2.Qg3#
      • 1...Rxd4!
    • 1.Rg6?
      • threat
        • 2.Qe3#
      • 1...Sc4
        • 2.Se6#
      • 1...Rg4!
    • 1.Qh2+?
      • 1...Sg3
        • 2.Qxh4#
      • 1...Rxh2!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Qe3#
      • 1...Sc4
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(a);XR(I)::S(F),XQ(a)
    • B(i);XR(C)::S(F),XB(i)
    • S(h);SBLOCK::QAB1(A)
  • Tries
    • Try
      • S(F);XP(g)
      • Threat
        • QAB1(A)
      • Vars
        • S(c);S_CUTR(d)::QAR2(A)
      • Refutation
        • R(d);
    • Try
      • S(H);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XR(C)::QAB1(A)
        • B(i);XB(J)::QAB1(A)
        • Q(a);::QAB1(A)
        • B(i);::QAB1(A)
        • S(c);::R1(C)
      • Refutation
        • R(d);XS(F)
    • Try
      • R(I);
      • Threat
        • QAB1(A)
      • Vars
        • S(c);S_CUTQ(a)::S(F)
      • Refutation
        • R(f);
    • Try
      • Q(A);CHECK
      • Vars
        • S(h);P_SPINS(h)::QAR2(A),XR(f)
      • Refutation
        • R(f);XQ(A)
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • S(c);S_CUTB(i)::S(F)
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